class_docstr: Extract raw HTML from text.
  
  The raw HTML is stored in the [`htmlStash`][markdown.util.HtmlStash] of the
  [`Markdown`][markdown.Markdown] instance passed to `md` and the remaining text
  is stored in `cleandoc` as a list of strings.
code: def handle_data(self, data: str):
      if self.intail and "\n" in data:
          self.intail = False
      if self.inraw:
          self._cache.append(data)
      else:
          self.cleandoc.append(data)
  
imports: from __future__ import annotations
  import re
  import importlib.util
  import sys
  from typing import TYPE_CHECKING, Sequence
label_desc: Use image node_id 9 for calling the HTMLExtractor obj's underlying member method code with example usage: obj.handle_data(data) without return types